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From "Di Li (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-21798) Oozie server crashes post migration after regen kerberos keytabs and restart all services
Date Wed, 23 Aug 2017 19:52:00 GMT
Di Li created AMBARI-21798:
------------------------------

             Summary: Oozie server crashes post migration after regen kerberos keytabs and
restart all services
                 Key: AMBARI-21798
                 URL: https://issues.apache.org/jira/browse/AMBARI-21798
             Project: Ambari
          Issue Type: Bug
    Affects Versions: 2.5.2
            Reporter: Di Li
             Fix For: 2.5.2


This is specifically for the IOP *4.2.0 *to HDP migration

Start with an IOP 4.2.0 cluster with both Oozie and Knox installed, enable Kerberos then run
thru the migration. Once EU is finalized, regen Kerberos keytabs via Ambari web UI and check
the checkbox to make Ambari restart all services as part of the regen process.

Notice Oozie crashes after a successful restart with following error in the oozie.log file

_2017-08-23 12:39:48,480 FATAL Services:514 - SERVER[umiak2.fyre.ibm.com] E0550: Cou
ld not normalize host name [${host}], Could not resolve host [${host}], ${host}: Name or service
not known
org.apache.oozie.service.ServiceException: E0550: Could not normalize host name [${
host}], Could not resolve host [${host}], ${host}: Name or service not known
_

This is because Knox kerberos.json in IOP 4.2.0 has oozie proxy setting as 
"oozie.service.ProxyUserService.proxyuser.knox.hosts": "${hosts}",
In HDP 2.6.2, the same property  is now 
""oozie.service.ProxyUserService.proxyuser.${knox-env/knox_user}.hosts": "${clusterHostInfo/knox_gateway_hosts}",
where the ${hosts} placeholder is changed and Knox params.py no longer has the logic to calculate
it .

*A manual fix* is to change Kerboers config for Knox - update "oozie.service.ProxyUserService.proxyuser.knox.hosts"
to have value "${clusterHostInfo/knox_gateway_hosts}"  ( done via UI, this will kick off regen
keytabs and restart services)



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